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Simplifying (x2 + 7x + 12)(x2 + -3x + -28) = 0 Reorder the terms: (12 + 7x + x2)(x2 + -3x + -28) = 0 Reorder the terms: (12 + 7x + x2)(-28 + -3x + x2) = 0 Multiply (12 + 7x + x2) * (-28 + -3x + x2) (12(-28 + -3x + x2) + 7x * (-28 + -3x + x2) + x2(-28 + -3x + x2)) = 0 ((-28 * 12 + -3x * 12 + x2 * 12) + 7x * (-28 + -3x + x2) + x2(-28 + -3x + x2)) = 0 ((-336 + -36x + 12x2) + 7x * (-28 + -3x + x2) + x2(-28 + -3x + x2)) = 0 (-336 + -36x + 12x2 + (-28 * 7x + -3x * 7x + x2 * 7x) + x2(-28 + -3x + x2)) = 0 (-336 + -36x + 12x2 + (-196x + -21x2 + 7x3) + x2(-28 + -3x + x2)) = 0 (-336 + -36x + 12x2 + -196x + -21x2 + 7x3 + (-28 * x2 + -3x * x2 + x2 * x2)) = 0 (-336 + -36x + 12x2 + -196x + -21x2 + 7x3 + (-28x2 + -3x3 + x4)) = 0 Reorder the terms: (-336 + -36x + -196x + 12x2 + -21x2 + -28x2 + 7x3 + -3x3 + x4) = 0 Combine like terms: -36x + -196x = -232x (-336 + -232x + 12x2 + -21x2 + -28x2 + 7x3 + -3x3 + x4) = 0 Combine like terms: 12x2 + -21x2 = -9x2 (-336 + -232x + -9x2 + -28x2 + 7x3 + -3x3 + x4) = 0 Combine like terms: -9x2 + -28x2 = -37x2 (-336 + -232x + -37x2 + 7x3 + -3x3 + x4) = 0 Combine like terms: 7x3 + -3x3 = 4x3 (-336 + -232x + -37x2 + 4x3 + x4) = 0 Solving -336 + -232x + -37x2 + 4x3 + x4 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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